Cromwell's Castle is on the island of Tresco in the Isles of Scilly

Isles of Scilly

The Isles of Scilly form an archipelago off the southwestern tip of the Cornish peninsula of Great Britain. The islands have had a unitary authority council since 1890, and are separate from the Cornwall unitary authority, but some services are combined with Cornwall and the islands are still part...

 .
It is a coastal Gun Tower built by Oliver Cromwell

Oliver Cromwell

Oliver Cromwell was an English military and political leader who overthrew the English monarchy and temporarily turned England into a republican Commonwealth, and served as Lord Protector of England, Scotland, and Ireland....

 in 1651-1652 as a replacement for King Charles's Castle

King Charles's Castle

King Charles's Castle is a coastal artillery fort near the northern extremity of the island of Tresco in the Isles of Scilly. It is now in ruins and the site is administered by English Heritage. It was a semi-hexagonal structure to provide a wide field of fire and two-storeyed to give at least two...

. The guns were mounted on the roof above the garrison's living quarters and magazines. The tower was originally entered at first floor level by an external stair on the south side. The present entrance dates from the construction of the lower gun platform added in the 1740s by Abraham Tovey, Master Gunner.

It is built on a promontory to guard the anchorage between Bryher

Bryher, Isles of Scilly

Bryher is the smallest of the five inhabited islands of the Isles of Scilly. It is home to a population of 83 . Bryher has an area of .-Geography:...

 and Tresco.

It is a Grade II* listed building under the guardianship of English Heritage

English Heritage

English Heritage . is an executive non-departmental public body of the British Government sponsored by the Department for Culture, Media and Sport...

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External Links

• History and Research on Cromwell's Castle: English Heritage